Here's a simple way to convert a decimal to a hex representation, for example, if you want to display an error number in standard hexadecimal format:
PS> (-2147217407).ToString("X") 80041001
Use a lower-case "x" if you want the hex value to use lower-case letters.
PS> (212).toString('x') d4
To convert a hex value to a decimal, prepend it with "0x":
PS> 0x8004101 134234369
As you'll see, this conversion will assume unsigned values, so values are always positive.
You can also use the -f operator:
PS> "{0:x}" -f 12345678 bc614e PS> "{0:X}" -f 12345678 BC614E
